/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.cxf.ws.security.wss4j;

import java.io.IOException;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;

public class DelegatingCallbackHandler implements CallbackHandler {

    private CallbackHandler pwdHandler;
    
    public DelegatingCallbackHandler(CallbackHandler pwdHandler) {
        this.pwdHandler = pwdHandler;
    }
    
    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
        for (Callback c : callbacks) {
            handleCallback(c);
        }
        if (pwdHandler != null) {
            pwdHandler.handle(callbacks);
        }
    }
    
    protected void handleCallback(Callback c) throws IOException {
        // complete
    }
}
